baber/WOPTO huggingface dataset:
Patent GB-245133-A (GB)
Title: Improvements in instruments for describing ellipses and other curves
IPC: B43L9/02
Filed: 1925-12-22
Abstract: 245,133. Terna, G. L. Dec. 26, 1924, [Convention date]. Ellipsographs; compasses for drawing spirals.- An instrument for drawing closed curves such as ellipses, or for describing curves of spiral form, comprises a compass-like device having a fixed leg 1 and moving leg 2, means being provided for automatically varying the separation of the legs during the rotation of the leg 2 around the leg 1. The ears 5 of the legs 1, 2 are connected by a pivot pin 6 encircled by a spring 7 tending to spread the legs. The pin 6 also passes through the ears of a yoke 9 which also has slots 10 through which passes a pin 11 engaging also in slots 12 in the legs, the yoke 9 being in this way maintained in a position in which its axis bisects the angle between the legs. The yoke 9 carries a spindle 13, screw-threaded at its upper end 14 and provided with a finger-piece &c. 15. Loosely mounted on the spindle 13 is a sleeve 17 with a collar 18 at its lower end, and loosely mounted on this sleeve and resting on the collar is a member 19 having two arms 20 connected at their outer ends by universal joints 22 to a disc 23. Also carried by the member 19 are two pivoted arms 24 which can be adjusted to control the tilting movement of the disc 23 about the line 22-22. An arm 29 adjustably mounted on the leg 2 engages at its outer end with the lower surface of the disc 23. For drawing an ellipse &c. the legs are set so that their separation is equal to the minor semi-axis when the end of the arm 29 is under the line 22-22. The member 19 is held by a thumb-piece 21 and the leg 2 is then turned around the leg 1. The pressure of the spring 7 causes the disc 23 to tilt through an angle determined by the adjustment of the stop 24. If the two stops are equally inclined to the horizontal the disc tilts equally on each side of the line 22- 22 and an ellipse is described. By setting the two stops at different angles, oviform &c. curves can be drawn. To enable spirals to be drawn, the upper part 31 of the sleeve 17 is internally and externally threaded and is split longitudinally so that it can be closed into engagement with the screw 14 by a nut 32. In this position, rotation of the spindle 13 causes the member 19 and with it the disc 23 to be moved axially, and hence a curve of spiral form is described. The disc 23 may be replaced by others in which, for example, the surface in contact with the arm 29 may be of undulating form, to enable other forms of curves to be described.
Patent GB-1474269-A (GB)
Title: Ion generation
IPC: F02M27/00
Filed: 1974-07-22
Abstract: 1474269 Treating IC engine charge and exhaust gas SCIENTIFIC ENTERPRISES Inc 22 July 1974 [1 Aug 1973] 32303/74 Heading F1B [Also in Divisions H1 and H2] A gas ionizer in which a succession of electric pulses having amplitude following a series of halfsine-wave envelopes is applied to electrodes is placed in the air intake or exhaust of an internal combustion engine to improve combustion or pollution levels. For example, Figs. 14, 15, in the air intake metal ring 241 with evenly spaced needles 242 is held between metal earthed rings 244, 245 by means of insulating spacers 243. In an exhaust system, Figs. 16, 17 (not shown) an ionizing needle is mounted on a cross shaped member in each opening of a manifold gasket surrounded by an earthed ring. Alternatively a single such member may be fitted where the manifold joins the exhaust pipe. See Figs. 1-8 (not shown) and Division H2 for circuitry and Figs. 4, 5, 9-13 (not shown) and Division H1 for details of the ionizer.
Patent GB-508280-A (GB)
Title: Improvements in and relating to internally fired marine boilers
IPC: F22D7/00
Filed: 1938-11-08
Abstract: 508,280. Water chambers in steamboiler flues. DALGLISH, W. Nov. 8, 1938, No. 32347. [Class 123 (ii)] A small auxiliary cylindrical drum boiler h is located in the combustion chamber or chambers of a marine boiler and has valved connections e, h leading to the bottom and theworking water level of the main boiler. The pipe connections pass through sleeves j, k replacing two of the usual stays in the rear water space. A valve g may be opened to blow steam through the auxiliary boiler and pipes.
Patent GB-1400764-A (GB)
Title: Optically controlled association matrix
IPC: G11C15/00
Filed: 1972-07-11
Abstract: 1400764 Comparators CARL ZEISS JENA VEB 11 July 1972 32365/72 Heading G4M An apparatus for determining the degree of match between an input signal and each of a set of reference values includes a matrix network. The junctions between the columns and rows of the matrix are rendered conductive or non- conductive according to the values of the set. The input signal is applied to the columns of the matrix, current flowing to the rows from each column in turn via the conductive junctions. The number of pulses appearing on each row indicates the degree of match between the corresponding reference value and the input signal- The junctions may be photo-diodes. In one embodiment the photodiodes are rendered conducting by shining a light through an apertured mask. The apertures correspond to the reference values. The conductive diodes, shown as black triangles in Fig. 1, connect true and inverse input signal lines e1-e6, e1-e6 to output lines b1-b6. Switches Se1-Se6, Se1-Se6 are set to represent the true and inverse forms of an input signal: here e1, e2, e3, e4, e5, e6. A pulse is applied to each switch in turn, the sequential pulses being the delayed output pulse of a generator 12. The number of pulses appearing on respective output lines b1-b6 indicates the degree of match between the input signal and the corresponding reference value indicated by the conductive diodes. Thus in this example counter C5 will count to 6, indicating identity, whereas counter C6 will count only to 2. Generator 12 may provide a series of pulses, and each switch in turn may be closed for a period proportional to a value represented by the corressponding element of the input signal, so that the corresponding line e or e receives a number of pulses proportional to that value. Instead of applying pulses to the input signal lines, a constant voltage may be applied. In this case, instead of illuminating all the apertures of the mask simultaneously they are illuminated sequentially, e.g. by a strip of light swept across the columns of the matrix, to render the diodes conductive. In a modification a spot of light is scanned over the mask. This modification may use a time-shared counter feeding storage addresses defined by the position of the spot. In a further modification no mask is used, the light spot being on-off modulated in accordance with the reference values.
Patent GB-339588-A (GB)
Title: Improvements relating to bedsteads
IPC: A47B23/02
Filed: 1929-09-20
Abstract: 339,588. Abrams, R. A., and Abrams, M. Sept. 20, 1929. Divided on 339,691. Invalids' tables combined with bedsteads.-A tube d is fitted under a bedstead a, b in brackets c, one of which carries a second bracket h with a socket g for receiving the end of a rod f supporting a folding-table, desk, or stand e. When the part e is not required the rod f may be pushed into the tube d. The socket g may be separate from the bracket c, and carried on the bedstead.
Patent GB-172329-A (GB)
Title: Improvements in and relating to apparatus for storing and distributing liquids
IPC: B67D7/16
Filed: 1921-12-03
Abstract: 172,329. MauclÞre, P. A. P. V. Dec. 6, 1920, [Convention date]. Direct gas-pressure apparatus, automatic and non-automatic; exhaust devices; valves for liquid, arrangement of; valves for pressure fluid, actuation and arrangement of.-The system described in Specifications 144,688 and 154,595, [both in Class 47 (ii), Fire-extinguishing &c.], is modified by connecting the gas space in the measuring tank 2a or 2b, Fig. 2, that has just been discharged with that in the reservoir 1 by pipes 25<a> or 25b respectively and pipe 36, thus allowing the excess pressure to expand into the reservoir and through the exhaust pipe 30 to the atmosphere. This connection is carried out by a key 29, which simultaneously connects the cylinder 37 containing inert gas under pressure with the full measuring-tank by pipes 39 and 25<b> or 25a, as the case may be, thus discharging liquid through the pipe 24, connected to both tanks by pipes which enter the casing 22 and are closed by non-return valves in this casing. The inert gas is prevented from escaping through pipe 24 when the measuring-tank is empty by a float-controlled valve. When the plant is not delivering liquid, the key is placed in mid position, which causes pipes 25<a>, 25<b> to be connected to pipe 36 so that the whole plant is at atmospheric pressure. The inertia of the inert gas or a check valve in the exhaust pipe 30 prevents entrance of air into the plant. In a modification, the measuring-tanks are worked automatically by a distributing-piston 48, Fig. 8, attached to the float 19<a> in the measuring-tank 2<a>, which connects the source of gas 37, Fig. 7, by pipes 38, 25 and an opening 51, Fig. 8, with the gas space in the tank 2<a>, discharging the liquid through the annular neck 15 and pipes 21<a>, 24 and simultaneously connecting the gas space in the auxiliary tank 2<b> with the gas space in the reservoir 1 by the pipe 25b, openings 53, 52, and the pipe 36, Fig. 7, thus causing the tank 2b to be filled by gravity through pipe 11. When the tank 2<a> is empty, float 19<a>, Fig. 8, draws down the distributing-piston 48, thus connecting the tank 2a with the reservoir and the tank 2b with the source of gas, and the operations in the measuring-tanks are reversed. The capacities of the measuring-tanks are calculated so that the filling of the principal measuring-tank 2a takes place more quickly than the emptying of the auxiliary tank 2<b>; in case the latter becomes accidently exhausted, the valve 47 prevents the escape of gas by the pipe 21b. The discharge of liquid in this manner is controlled by a tap on the discharge pipe 24. A mobile supply container takes the place of. the supply tank 9<a>, 9<b>, Fig. 6, of Specification 154,595, [Class 47 (ii), Fireextinguishing &c.], the liquid passing from the supply container to the reservoir and gas in the reverse direction by another pipe in order to prevent loss of liquid by evaporation. In a further modification, the measuring-tanks are contained in a sump in the storage reservoir.
Patent GB-324907-A (GB)
Abstract: 324,907. Heyne, W. O., Packman, P. J., and Plessey Co., Ltd. Oct. 29, 1928. Totalizators. - The multi-denominational impulses from the ticket-issuing machines are received by the respective denominational escapement devices, consisting of escapement units coupled together in cascade as in Specification 287,767. More than one set of indicators may be controlled from the same groups oi escapement devices, and means for simultaneously zeroizing all indicator elements are also provided. Fig. 1 shows a three-denomination indicator, the numeral drums of which are driven by power shafts 17 under the control of escapement devices 4, 5; 6-8 and 9-11, for example in the manner described in Specification 324,906. The escapements units 4, 5 ; 7, 8 and 10, 11 are connected with ticket-issuing apparatus for delivering tickets of different denominational values such as 1/. 10/- and ú5 and transfer is provided for by additional units 6 and 9 controlled by contacts 21, 22. For zeroizing purposes coils 26, Fig. 2, in one of the escapement devices pertaining to each indicator drum is wired to a switch 27 controlled by the drum so that when the latter is not at zero the switch closes. By breaking the main circuit nine times by means of a tapping- key 28 therefore, all the drums may be simultaneously advanced until they reach zero whereupon their zeroizing circuits are opened by the switches 27. According to the Provisional Specification, each indicator drum may be frictionally driven and be controlled by ten magnets energized successively by the closing of contacts arranged near and operated by the last unit of the escapement mechanism. Specifications 286,997, 294,181, 325,073; and 325,111, [Class 40 (i), Electric signalling systems &c.], also are referred to.
Patent GB-537514-A (GB)
Title: Earth inductor compass
IPC: G01C17/30
Filed: 1939-12-29
Abstract: 537,514. Earth inductor compasses. BENDIX AVIATION CORPORATION. Dec. 20, 1939, No. 32615. Convention date, Dec. 29, 1938. [Class 37] [Also in Group XXXV] An earth inductor compass comprises an indicator actuated by a driving motor, an earth inductor for deriving an alternating E.M.F. from the earth's field, means for locally generating an alternating E.M.F. of the same frequency connected to energize the driving motor, and amplifying means for the E.M.F. generated from the earth's field for controlling the driving motor to actuate the indicator into an angular position corresponding to the position into which the earth inductor has been displaced, so as to indicate the direction of the earth's field. The stator of the earth inductor 1 comprises three pole pieces 2, 3, 4 of highly permeable magnetic material, such as permalloy, wound with coils 5, 6, 7. An unwound rotor 8, also of permalloy, is rotated by means of a motor M and generates E.M.F's in the coils 5, 6, 7. proportional to the cosine of the angle # between the centre line of each coil and the direction N of the earth's field. The coils 5, 6, 7 are star-connected to a point 16 and are also connected to star-connected stator windings 18, 19, 20 of an indicating device 17 having a rotor with a single-phase winding 22 and a pointer 23. This rotor is driven by the rotor 25 of a two-phase induction motor 24 through reduction gearing. One phase winding 28 of the stator of the motor 24 is energized from the rotor winding 22 through an amplifier VT. The other phase winding 27 of the stator is energized from a local generator G driven by the motor M. The generator G comprises a variable condenser having a stationary plate with radial portions 29, 30, 31 and a rotatable plate with radial portions 32, 33, 34. The variable condenser is connected to the input of a valve VT1 through a fixed condenser Cl and across a resistor R1, the output of the valve being connected to the winding 27 through a transformer T and phasing condenser C2. A D.C. charging potential is impressed on the variable condenser through a resistor R2, the potential across which is periodically increased and decreased by the rotation of the condenser G. A current is thereby supplied to the winding 27 of the same frequency as that induced in the rotor winding 22, but shifted in phase by 90 degrees by the condenser C2. The amplitudes and phases of the currents in the stator coils 27, 28 are such as to turn the rotor 22 of the indicator 17 into a null position corresponding to the position of the earth inductor 1 with respect to the earth's field.
Patent GB-798650-A (GB)
Title: Improvements in pipe couplings
IPC: F16L23/04
Filed: 1955-11-15
Abstract: 798,650. Pipe joints. DAIRY PIPE-LINES, Ltd., and MORRIS, W. Nov. 8, 1956 [Nov. 15, 1955; March 16, 1956], Nos. 32646/55 and 8295/56. Class 99(1). A coupling particularly for pipes conveying liquid foods comprises pipe ends 1, 2 with flanges 3 which have recessed faces fitting against a resilient sealing ring 4, and external bevelled faces 5, the bevel angle of which is between 10 and 20 degrees to a normal to the pipe axis which are surrounded by a ring 6 split into segmental parts and held by simple annular holding means against separation and without substantial constriction. The sealing ring is of T-section, Fig. 4, the stem being slightly divergent and with a concave inner periphery which becomes flush or slightly convex with the pipe bore under compression. In assembling the joint, the split ring is pressed or tapped inwardly to compress the sealing ring, the steep bevels on the flanges allowing only small compressive movement on the sealing ring but providing greater resistance to release, and a holding ring 8 is pressed or tapped axially over the split ring to secure the joint. The edge of the split ring is bevelled at 9 to give a lead to the sleeve. The end faces of the pipes and the flanges are of accurately shaped stainless steel and the ring 4 is made of accurately moulded natural or synthetic rubber or material such as nylon so that an effective seal is provided for small axial movement in coupling. In a modification, as an alternative to the sleeve 8 a C-clip is used. The holding means may comprise plain rings recessed to receive the split rings, or a single wide band could be used, the periphery of the split ring having a rebate to allow the band to pass on to and seat about the middle of the coupling. Specification 17432/11 [Class 99] is referred to.
Patent GB-1280008-A (GB)
Title: Process for grafting unsaturated acids or esters on polyethylene
IPC: C08F255/00
Filed: 1969-06-27
Abstract: 1280008 Grafting polyethylene with an acid or ester SOC NATIONALE DES PETROLES D'AQUITAINE 27 June 1969 [28 June 1968 (2)] 32679/69 Heading C3G A polymerizable unsaturated acid or ester is grafted on to non-preactivated polyethylene by a process in which an aqueous medium containing suspended polyethylene and the acid or ester in solution is subjected to the action of a free radical catalyst at a temperature lower than the melting point of the polyethylene. The aqueous medium may comprise a polar solvent completely miscible with water e.g. ethanol, n-butanol or dimethyl formamide. In the examples the graft monomers used are (a) acrylic acid, (b) methacrylic acid, (c) ethyl acrylate or (d) methyl methacrylate. Graft polymer (a) is regrafted twice with acrylic acid or saponified with ethanolic or methanolic NaOH.
Patent GB-308996-A (GB)
Title: Improvements in the production from montan wax of valuable products suitable for fixing solvents used in shoe creams and the like
IPC: C09G1/08
Filed: 1927-12-03
Abstract: 308,996. Johnson, J. Y., (J. G. Farbenindustrie Akt.-Ges.). Dec. 3, 1927. Mineral waxes, purifying &c.-Montan wax especially suitable for fixing oil of turpentine and other solvents or diluents in shoe-creams and the like, is obtained by bleaching with oxidizing agents, and then further treating with a solution of a quantity of oxidizing agent 20-50 per cent of that required for the customary bleaching. Or the crude or deresinified wax may be treated initially with a corresponding excess of a solution of oxidizing agent. 175-200 per cent CrO3 relative to and for treating deresinified wax as compared with the usual 140 per cent is specified. In an example, 100 kilograms of deresinified crude wax are malted over about 200 litres of a spent solution or chromic acid in sulphuric acid. 200 kilograms of CrO3, as an aqueous solution containing about 95 grams of CrO3 and 400 grams of H2SO4 per litre, are then added gradually with stirring and in stages as described in Specification 302,626 with a rise in temperature to 112‹ C. Water is allowed to evaporate for about 5 hours, bringing the boiling temperature to about 118‹ C. The spent liquor is withdrawn, and the bleached wax freed from chromium salts and acid as described in Specification 302,626. Specifications 156,141, 183,186, 209,389, 258,099 and 305,552 also are referred to.
Patent GB-446189-A (GB)
Title: Improvements in and relating to control devices for imparting longitudinal movements
IPC: G05G5/26
Filed: 1934-11-14
Abstract: 446,189. Bowden mechanism; screw- and-nut mechanism. ARENS CONTROLS, Ltd., and FAULKNER, A. R., 2, South Wharf, Praed Street, London. Nov. 14, 1934, No. 32767. [Class 80 (iii)] A control device for imparting longitudinal movements and effecting a coarse and a fine adjustment, the coarse adjustment being effected by longitudinal movement of a threaded member the threads thereon engaging a gear wheel subjected to the action of frictional gripping means, the fine adjustment being effected by rotation of said threaded member, the gear wheel then serving as a nut. The transmission means mav be flexible or rigid. A flexible element 1 capable of transmitting push and pull is enclosed in a casing 1<a> secured to a guide casing 2 for a rod 6 adapted to be moved bv a knob 3. The rod 6 is screw-threaded to engage the teeth of a pinion 7 mounted on a bolt 12, Fig. 3, supported by a clip 11 around the casing 2. The pinion is frictionally held by washers 14 the compression of which can be adjusted. The inner member 1 of the transmission passes upwardly through the rod 6 and is secured to an enlarged part 8 bearing on a shoulder in the rod. For a coarse adjustment, the rod 6 is moved axially, at the same time rotating the pinion 7 ; the fine adjustment is effected by rotating the rod, the pinion 7 being prevented from rotating by the frictional grip of the washers. The control may be mounted on a dashboard bv a detachable cap 9, and is stated to be particularly applicable to aircraft to permit of the speed of one engine being accurately controlled independently of the others. The longitudinal movement may be effected by a lever, a slot in which engages a pin on the rod.
Patent GB-796576-A (GB)
Title: Polysiloxane compounds
IPC: C08G77/00
Filed: 1956-10-29
Abstract: The invention comprises a vinyl trisiloxane having the formula: <FORM:0796576/IV (a)/1> It may be prepared by (1) reacting ethylvinyldichlorosilane with potassium trimethyl silanolate in an organic solvent; or (2) cohydrolysing ethylvinyldichlorosilane with trimethylchlorosilane; or (3) reacting bis-(trimethylsiloxy) ethyl silane with acetylene.  Higher polymers.-The above compound may be polymerized through its vinyl group to form linear, soluble polymers, and may be copolymerized with other monomers such as styrene or vinyl chloride.  The compound may also be equilibrated with dimethyl siloxanes to yield vinyl siloxanes for silicone elastomers; and copolymers of the compound may be similarly equilibrated to produce block copolymers.  In an example, the trisiloxane is copolymerized with vinyl chloride in aqueous emulsion containing soap and potassium persulphate, and the copolymer is precipitated with methanol and extracted with a mixture of ethanol, toluene and water.  Transparent, flexible films are pressed from the copolymer.